drowning but in 2011 los angeles sheriff's detectives reopening the case after the skipper of the boat dennis davern wrote a book and gave a different account. >> i believe that robert wagner was with her up until the moment she went into the water. >> reporter: davern said there was arguing on the yacht, a fight between the actor and christopher wall ken in which a bottle was thrown. after wood went to bed, a loud argument and parent struggle heard from her cabin. >> the fight went to the back of the boat and then it was quiet. >> reporter: davern also said he waited for hours before calling for help. last year the coroner's office changed the cause of wood's death from accident to undetermined. it remains to be seen if this new information will lead to criminal charges. >> john miller's here. so how significant is this and what could it change? >> it could be very significant because it shows that the coroner is now going down the same path as the sheriff's homicide investigators, which is they have real questions about the circumstances of natalie wood's death or that it should have ever b